Oud is a fragrant oil derived from resin and worn traditionally by both Emirati men and women. It has a distinctive scent that visitors recognise and associate with the Emirates. The oil is derived from the resinous heartwood (often known as agarwood), produced by trees belonging to the species of the Aquilaria genus of Thymelaeaceae family. Bakhoor is the name given to agarwood chips that have been soaked with jasmine and sandalwood to soften and sweeten the heavy scents, or amber and citrus essential oils to add crisp notes. They are then compressed and shaped before being packaged in square, flat blocks segmented into equal portions. At home, these pieces are then burnt over a charcoal stove or electric burner to release plumes of fragrant smoke to fill the room.